Trolley-harp.



PATENTED MAR. 5, 1907.

G. sa W. HIBBARD. Y TROLLEY HARP. APPLICATION FILED FEB. 28, 1906.

A TTOHNE YS .A1 m n, M

l N, M

UNITED STATES PATENT oEEroE.

CHARLES HIBBARD AND WARREN HIBBARD, or SANDY HiLL, NEW YoRK,

ASSIGNORS TO GLENS FALLS GLEN S FALLS, NEW YORK.

IMPROVED TROLLEY FORK COMPANY, OF

TROLLEY-HARP..

Specification of Letters Patent.

Patented March 5, 1907.

Application sied :February 2s, 1906. seri-.ti No. 303,408.

' and WARREN HIBBARD, citizensof the United States, and residents of Sandy Hill,

in the countyof Washington and State of New York, have invented a new and Improved T rolley-Harp, of which the following is a full, clean-'and exact description.

Our invention relates to trolley-harps, our more particular purpose being to provide means for mounting the trolley-wheel upon the harp and for removing the same therefrom, and also for maintaining the wheelmountings firmly in position while the wheel is in place.

Reference is to be had to the accompanying' drawings forming a part of this specification, in which similar characters of reference indicate 'corresponding parts in all the iigures.

Figurel is a vertical section through the trolley-harp, showing the wheel mountedin osition, and also showing the mechanism or enabling thewheel to be removed and replaced. Fig. 2 -is a vertical section upon the line2 2 of Fi 1 looking in the direction of the arrow an showing fone of the disks used for holding the stub-shaft which carries the trolley-wheel. Fig. '3 is a view somewhat similar to Fig. 2, but showing the disk as occupying a different position to facilitate the removaloi the stub-shaft. Fig. et is an enlarged horizontal section upon the line 4. 4 of Fig. 1 looking in the direction of the arrow `and showing the locking mechanism for holding the adjusting nut in any desired predetermined position. Fig. 5 is aperspective view of the stub-shaft For carrying the trolley-wheel. Fig-. 6 is a perspective view of one of the sheet-metal guards used forguiding the stub-shaft into and out of its normal position and also for protecting certa- 1n movable parts. Fig. 7 is a perspective view of a Spanner-wrench for turning the movable nut 37 by Ameans of the adjusting-wheel 38; and Fig. 8 is a reduced fragmentary elevation, somewhat similar to Figs. 2 and 3, but showing the sheet-metal guards 21. as mounted in position and partially covering one of the disks 15. Y

n The trolley-stem is shown at 6, and is provided with a reduced portion 7, upon which its a fork 8, the latter being secured in posil tion by means of a pin 9. Extending upwardly vfrom the reduced portion 7 and integral therewith is a screw 10. 4The fork 8 comprises two standards 11 integral therewit-hand spaced apart, as will be ,understood from Fig. 1. Eachstandard 1 1 is provided with an aperture approximately circular in general outline, this aperture merging into a substantially V-shaped aperture 13, the wall of which serves as a bearing portion. A slot 14 also merges into the aperture 12 and extends to the edge of the standard.

Upon each standard 11 is a disk 15, provided with a lattened portion 15a and with an aperture 15b. is a slot 16, and extending from each disk 15 through the adjacent slot 16 is a revoluble stem 17, provided with a head 18. The arrangement is such that each disk 15 has a vertical play, for the reason that its stem 17 can move slightly in its slot 16, as will be understood from Fig. 1. Each standard 11 is an arcuate slot 1,9, which is concentric to the slot 16. Mounted upon the disks 15 and projecting outwardly through the arcuate slots 19 are two studs 20. By means 0f these studs the disks can be turned or rocked within certain limits, as will be understood from Figs. 1, 2, and 3. sheet metal, are mounted disks 15, so as to partially cover the same. Each guard 21 is providedwith screw-holes 22, through which pass screws 23 for holding the guard in position. Each guard 21 is further provided with a slot 24 of the shape indicated in Fig. 6. This slot is bounded by fingers 25 26 integral with the guard 21 and adapted to be bent outwardly, as ,indicated in Figs. 6 and 8. These sheet-metal guards 21 are mounted directly upon the standards ,11 and retain sliding lugs 27 and other movvable parts, the lugs 27 being disposed in passage-,ways 2S, having thev form of vertical slots", as indicatedin Fig. fingers 25 26 bent outwardly are unable to slip behind them while the wheel and stub-shaft are being inserted. A stubshalt 2), hereinafter described,V is provided with prismoidal ends 3() integral therewith and is adapted to be inserted into the fork, so that the prism oidal ends 30 enter the bearing- Adjacent to each disk 15 Two gu'ards 21, or' adjacent'. to thev By having the the washers 22 IOO , apertures 13. For this purpose the disks 15 A position indicated in Fig. 2.

thestuds 20, so .that the facets a of the' disks engage'the prismoidal ends 30, as indicated m Fig. 2; The disks are now locked in position by means of the movable lugs 27'.A

For this purpose each lug 27 is provided at its upper end with an arcuate surface 311,-con forming substantially to the shape of the disks 15 immediately over it, so that when the sliding lugs 27 are raised, as indicated in Fig. 2, they press the disks 15 againstthe prisnioidal ends 30 of the stub-shaft 29 and hold the same rigidly in its normal position.- Washers S2-.encircle the stub-shaft '29 `and center the-trolley-Wheel which is shown at 33.`

This Wheel is provided with' axial sleeves 33a 34, the latter turning directly upon the stubshaft, .as will be understood from Fig. 1. Mounted Within the bottom ot the fork is a movable plate 35,v provided With a central aperture 36, which encircles the screw 10.

- 'This plate 35v engages directly theV lowerA ends ofthe sliding' lugs 27 and is adapted to raise the same if the plate 35 is raised. Revolubly mounted upon the scre'vs7 10.s a nut- 37, provided externally With an adjustingevvheel 38, rigid relatively theretoandserving to o erate the same. A locking-plate 39 is provided with -an upturned flange. 40, which prevents displacement of the movable plate 35, as will with standards spaced apart and .provided be understood from'Fig' ."1. This flange 40 extends into a slot 41, vso as tobe flush With the outer adjacent edge'of the standard 1 1.l

The opposite endofthe .locking-'plate 39-is provided with a tongue 42, which extends into a slot 43, and thus serves as a guide for maintzning the plate 39 ina given plane, or, in other Words, to prevent lateral-displace ment of the plate 39, as will be understood f'romFig. 4. A-sprinff 44 is mounted rigidly upon' one of the standards 11 and engages `a lug 45, projecting downwardly from the under side ofthe looking-plate 39. This lug engages the adjusting-Wheel 28, as indicated by dotted'lines in Fig. 4, and normally prevents this adjusting-Wheel from being'turned. A Spanner-Wrench 46 (see Fig. 7) is provided with a fork '47 for encircling the lug E27-and is further providedwith a lug 48for engaging the outer edge of the adjusting-Wheel 38.

This is an ordinary Spanner-wrench. It isused by placing it in such position that the fork.

47 straddles the nut 37,-the lug 48V being thusf brought in to engagement-With the adjusting'.-

The disks Wheel 3S. The 'flange 40 being now pressed.

by the operators thumb the lug 45 disengages the adjusting-Wheel 3S, and the Spanner- Wrench46, having been placed in position, as just described, the adjusting-Wheel 38, carrying with it therevoluble nut 37, is turned. By thisnieans the movable plate 35 is raised or lowered, and consequently the sliding lugs 27 are likewise raised and lowered. The guards 21, in addition tothe purposes'above stated, serve as contact-springs. They insure good electrical contactybetween' the trolley-Wheel'and the body of the harp.

The operation of our system is as follows: Assuming that the stub-shaft 29 is in its normal position, as indicated in Figs. 1 and 2, the operator in order to remove it presses the ange 40 and turns the adjusting-Wheel 38 by means of the Spanner-Wrench 46, thus lowerin'g';tlie sliding lugs 27,. Then by means of the studs 2() herotates the disks 15 into the position indicated in Fig. 3 and then turns these disks in a direction Which, according to Fig. 3, would be clockwise,so that the stubshaft may be removed through the slot 14. In order to replace the stub-shaft, (provided With the Wheel, if desired,) the reverse operation is carried out, the stub-shaft, being carried in through the slot 14 and ultimately lodged in such position that the prismoidalv ends 30 fit into the positions indicated in Figs. 1 and 2.l Inthis case the last step in turning the adjustingfwheel 3S to' its iinal position is that the operator removes his thumb from the flange 40 and ailowsthe lug 45 to lock the adjusting- Wheel 38 in position, as indicated by dotted lines in Fig. 4. f Having thus described our invention, We claim as new and desire to secure by Letters Patent- 1.' The combination of a member provided with apertures and with bearing portions merging into said apertures `a stub-shaft provided with ends4 adapted toit said bearing portions, disks mounted WithinA said apertures and provided with portions for engaging saidstub-shaft, being adapted to move slightly in a direction' crossing. the general plane of rotation of. said disks, means .for moving said disks by hand, 'and mechanism for locking said disks rigidly against said stub-shaft.y 2.".The .combination oi a fork provided With slots and lWith bearing portions, revolue ble dis-ksconnected With `said fork and provided With apertures adapted to register with saidslots and also adapted to register With said bearing portions, means controllable at Will, for turniiigl said disks, saiddisks--being adapted -to travel laterally in a direction crossing the-planeet revolution of said disks, lugs provided With vpt )rtions for engaging said disks, vandI mechanismcontrollable by hand -ior-*frcing saidlug's toward said'disks.

. tuating said sliding lugs, and screw mechanism for moving said movable plate.

L1. The combination oi a fork, a stub-shaft mounted therein and adapted to support a trolleyavheel, revoluble diskscoacting With said iork for lockingsaid stub-shaft rigidly in, relation thereto, sliding lugs for engaging said revoluble disks, a movable plate for actuating said sliding lugs, screw mechanism ior.inoving said movable plate, and means for locking said screw mechanism in a predetermined position.

5. The combination of a fork, a stub-shaft mounted therein, revoluble members for' placing said stub-shaft in position relatively to said fork and for displacing the same, means for forcing said revoluble members iny a direction lateral to the general direction of rotation thereof so as to hold said stub-shaft in position and torelease the same from said position, and sheet-metal plates mounted upon said j'fork and partially covering said revoluble members and said mechanism for actuating the same.

6.l The comblnationof a fork, a member mounted thereupon and adapted to support' a trolley-Wheel, revoluble disks mounted upon said fork and adapted to permit the insertion and removal of said member, lugs engaging said. disks for clamping 'the same in predetermined-positions, a movable plate engaging said lugs for the purpose oi forcing the same in a predetermined direction, and means' controllable at will for actuating said movable plate. Y

7. The combination ci a fork provided with a bearing portion, and an aperture 'merging thereinto and provided with a slot,

a sheet-metal guard connected with said fork and provided-with a slot registering with said disposed adjacent to` said slots, revoluble disks mounted upon said fork and movable ,relatively thereto in a direction crossingthe general plane oi revolution oi said disks, said revoluble disks being provided with aper tures adapted to register with said slots, a pin provided with end portions for ittin into said slots of said fork, and also into sai apertures of said disks, said end portions of said pin being of proper conformity to' fit `against said bearing portions of said` fork,

and means forlocking said disks.

9. The combination of a fork provided With angular bearing portions and with a ertures leading thereto, a stub-shaftprovi ed with angular ends adapted to engage said bearing portions and to follow said apertures leading thereto, and means for positively locking said stub-shaft relatively to said fork.

10. The combination of a fork, a stub-shaft mounted thereupon and adapted' te support a trolley-Wheel, pressure mechanism connected with said fork and detachably engaging said stub-shaft for the purpose of holding the same in position to said fork, and means controllable at -Will for varying the degree of pressure exerted by said pressure mechanism against said stub-shaft. n

11. The combination cf" a fork provided With bearing portions, a shaft mounted upon said fork and provided With portions engaging said bearing portions, said shaft being adapted to support a trolley-Wheel,l afmovable member connected with said fork and temporarily engaging vsaid shaft for the purpose of holding the same in position, and

means controllable at will for adjusting said movable member relativel` to said shaft.

12. The combination o a fork provided .with bearing portions and With apertures cHAnLns HIBBARD.

WARREN HIBBARD.

Witnesses: A ISAAC F. MosHER, HERBERT HIBBARD. 

